Pronuclear development and the first cleavage division in polyspermic mouse eggs
نویسندگان
چکیده
منابع مشابه
Timing of the first cleavage division of haploid mouse eggs, and the duration of its component stages.
Mouse eggs were activated by treatment with hyaluronidase which removed the follicle cell9, followed by culture in vitro, and examined at the first cleavage mitosis. Second polar body extrusion usually occurred and haploid parthenogenesis was initiated. Air-dried chromosome preparations were made between 11 and 15-5 h after activation. Out of the 308 eggs examined 74 had already progressed to t...
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Two independent studies have recently suggested similar models in which the embryonic and abembryonic parts of the mouse blastocyst become separated already by the first cleavage division. However, no lineage tracing studies carried out so far on early embryos provide the support for such a hypothesis. Thus, to re-examine the fate of blastomeres of the two-cell mouse embryo, we have undertaken ...
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efl students gender and socioeconomic status: the use of politeness strategies in the first and second languages
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Spindle-to-cortex communication in cleaving, polyspermic Xenopus eggs
Mitotic spindles specify cleavage planes in early embryos by communicating their position and orientation to the cell cortex using microtubule asters that grow out from the spindle poles during anaphase. Chromatin also plays a poorly understood role. Polyspermic fertilization provides a natural experiment in which aster pairs from the same spindle (sister asters) have chromatin between them, wh...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1981
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0620493